... China (Mainland)Brand Name: SAIGEMaterial: Stainless SteelProduct Name: stainless steel ballMaterial: AISI304,316,316L,420,440,200,202MDiameter: 3.175mmGrade: G10-G1000Certificate: ISO9001:2008 ... Survival, Management for Benefit, Technology for Development, Service for reputation. 3.175mm Stainless steel ball aisi 420 440